Bolt construction



Dec. 17, 1929. w. MARSHALL ET AL BOLT CONSTRUCTION 3 driginal Filed Feb. 16. 1925 wfi w "raw 6. lu 7 w [K W 3 En A 7% 3 7 Z @2 W9 1 w STATS WILLIAM MARSHALL, OF DETROIT, MICHIGAN, AND FREDERICK KIEI'ILER, DECEASED,

PATENT LATE OF DETROIT, MICHIGAN, BY ANNA M.- KIEHLER, EXECUTRIX, OF DETROIT, MICHIGAN, ASSIGNORS TO BRIGGS MANUFACTURING COMPANY, OF DETROIT, MICHI- GAN, A CORPORATION OF MICHIGAN BOLT CONSTRUCTION Original application filed February 16, 1925, Serial no. 9,661. Divided and this application filed March 5, 1928. Serial No. 259,256.

This invention relates generally to latching bolts designed particularly for use with vehicle door locks and latches and consists of certain novel features of construction,

combinations and arrangements of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a horizontal sectional view of the bolt embodying our invention applied to a vehicle door.

Figure 2 is a side elevation of a slightly modified form of bolt.

Figure 3 is a detail top plan view of the bolt shown in Figure 2.

This application is a division of applicants co-pending application for vehicle door latches, Serial No. 9,661, filed Feb. 16, 1925.

Referring now to the drawings and particularly to Figure 1, the numeral 1 designates a door, preferably of a vehicle body, having a pillar 2 provided at its inner edge with a channel-shaped portion 3 which constitutes a run-way for a vertically movable glass panel 4.

In order that a suitable latch may be mounted and operated upon the pillar 2 without interfering with the vertical movement of the glass panel 4, we preferably provide a case plate 5 that is preferably U-shape in cross section and that preferably straddles the channel-shaped guide-way 8. Straddling this case plate 5 and the guide-way 3 for the "glass panel is a reciprocatory bolt 6'that is also preferably substantially U-shape in cross section. As shown, the shank sections 7 and 8 respectively of the bolt slidably engage the inner and outer sections 9 and 10 respectively of the case plate 5, while the transversely extending portion'll constitutes the head of the bolt and is adapted to engage the striker plate 12 of a suitable keeper upon the door jamb of the vehicle body.

The head 11 of the bolt is preferably provided with a vertical inwardly off-set portion 13 providing a shoulder 14 that is adapted to engage the striker plate 12 whereby the door will be held in partially closed position.

For retracting the bolt 6 we preferably provide a suitable rollback 15 that is adapted to be operated'from the outside of the door, and a pivoted lever 16 that is adapted to be operated from the inside of the door. The rollback is engageable with a portion of the outer shank section 8 of the bolt and is provided wt h a hub 17 that is journalled in aligned openings in the outer section 10 of the case plate and a cover plate 18 secured thereto. The lever 16 is preferably pivoted at its lower end to the inner section 9 of the case plate and is engageable with the pin 19 on the section 7 of the bolt for retracting the latter. I

Referring to Figures 2'and 3 we have shown a slightly modified form of bolt in which the inner shank section 20 of the bolt is provided with a pivoted portion 21., As shown, this portion 21 is preferably provided at its forward end with a rounded head 22, and a reduced neck 23 that engage correspondingly shaped recesses2t and 25 respectively in the inner section 20 of the bolt. Thus this hinge joint will prevent the inner and outer sections of the bolt from binding and will relieve any friction therebetween especially if a the sections of the case plate are not in correct alignment.

Case plates that are U-shape in cross section have a tendency to vary from the base of the U toward the open free ends of the side walls of the U. In other words, the side walls in some case plates diverge from the base of the U and if the bolt shank side sections were absolutely parallel there would be a tendency for the free innermost endsof V the U-shaped bolt to bind against the diverg ing side walls of the case plate. In the present construction the true parallel side walls of the rigid bolt head straddle the side walls of the case plate for only a short distance, while the hinged section in question is free to move laterally to compensate for any diverging side walls of the case plate.

From the foregoing description, it will be readily apparent that a latch of this type may small section, consequently the vision of the occupants of the vehicle is materially increased. Moreover, the bolt straddles the guide-way for the glass panel, hence the be mounted upon a door pillar having a very movement of the outside operating means will not interrupt the vertical movement of the glass panel.

While it is believed thatfrom the f0regoing description, the nature and advantages of our invention will be readily apparent, we desire to have it understood that we do not limit ourselves to what is herein shown and described and that such changes may be resorted to when desired as fall within the scope of what is claimed.

What we claim as our invention is:

1. A door latch bolt capable of straddling and sliding over a door latch case plate and comprising a substantially U-shaped member having a base constituting a bolt head for engagement with a striker plate and having shank portions projecting rearwardly from said base, one of said shank portions having two sections, one section having a rounded head, and the other section having an opening receiving said head and permitting said first mentioned section to swing laterally relative to said second mentioned section.

2. A door latch bolt formed from sheet metal comprising a substantially U-shaped member having a base constituting a bolt head and having shank portions rigid with said base, one of said shank portions having two pivotally connected sections whereby one of said sections is movable laterally relative to the other section.

In testimony whereof We affix our signatures. 7

WILLIAM MARSHALL. ANNA M. KIEHLER, Eweeutriw 0f the Estate of Frederick Kz'ehler,

Deceased. 

